Assignment:
Discuss the role of the physical layer, data link layer, and network layer in network transmissions. For the physical layer, contrast circuit switching and packet switching. For the data link layer, discuss sliding window protocols and the data link layer in the Internet. For the network layer, discuss virtual circuits and datagram, subnets, and the purpose of routing algorithms.
Your answer must be typed, double-spaced, Times New Roman font (size 12), one-inch margins on all sides, APA format.